DE2432083A1 - PRODUCT PULL-UP AND WINDING DEVICE FOR CIRCULAR KNITTING MACHINES - Google Patents

Description

Pull-off and take-up device for circular knitting machines

The invention relates to a goods take-off and take-up device for circular knitting machines with a drive for the goods take-off and a drive for the am Circumference of the roll arranged distribution rollers, which are preceded by a slip clutch

Machines are known in which the web tension is generated by the take-up device. In this case, a thread-loaded slip clutch is provided on the drive of the goods winding device Stress is increased in accordance with the increase in the angular diameter. The disadvantage of this device consists in the fact that the goods take-off requires two drives, a drive for the take-off rollers and a drive for the winding roller · Due to the direct arrangement of the slip clutch on the drive of the winding roller, in Depending on the winding roller diameter, a large adjustment range is required.

It is also known that the adjustment of a clutch connected to the drive of the winding roller is immediate can take place depending on the goods withdrawal of the goods fed to the roll. They are pivoted by the changing goods train · This pivoting movement is transferred to the coupling via a linkage, the adjustment of the coupling is carried out causes the goods train itself.

The disadvantage of this device is again the arrangement of two drives, the drive for the Abisu rollers and the drive for the winding roller. To the

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On the other hand, the pivoting movement of the tensioning rollers causes a fluctuation in the winding or take-off tension, which again adversely affects the quality of the knitted fabric

Other circular knitting machines have a drive for the distribution rollers arranged on the circumference of the roll, which have a Slipping clutch is upstream. But it is also necessary again two separate drives, (Jen take-off roller drive and to use the winding roller drive.

The purpose of the invention is to avoid fluctuations in the To avoid take-off and winding tension in order to eliminate horizontal stripes in the goods and thus one To prevent quality degradation.

The invention is based on the object of the rotary movement to design the take-off rollers and the winding rollers so that no fluctuations in the take-off or winding tension appear.

According to the invention the object is achieved in that a slip clutch is also arranged upstream of the goods take-off rollers and both clutches occupy a common drive. The torque to be transmitted is the slip clutch adjustable for the fabric take-off rollers and controllable for the winding roller depending on the diameter of the roll intended. The common drive consists of a driven one Flange disk, which sits in a stationary position on a drive shaft, with a friction disk on one side of the faceplate is assigned with adjustable contact pressure, dl · is drive-connected to the take-off roller · on the other On the side of the faceplate, a friction disk with controllable contact pressure is assigned which is drivingly connected to the winding roller is, whereby for pressing both friction disks at 41

■> 3. mm

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Face plate preferably plate spring assemblies are provided. To change the torque of the Winding roller drive-connected friction disc, the pre-tensioning of the disc spring assemblies is provided in a controllable manner The preload is controlled by a height that changes with increasing angular diameter Angular axis that follows a curve on a swivel Lever is applied and this via corresponding transmission elements on the disc spring assembly of the controllable friction disc presses

The advantage of the invention is that only one drive for the trigger and the reeling through a central Flange washer is required · Furthermore, there is a constant take-off tension and a constant winding tension without additional aids possible.

The invention will below using an ^A usführungsbeispiel a circular knitting machine are explained in detail ·

It becomes the front view of the goods take-up device shown schematically

At the bottom of the machine frame 1, the bevel gear 2 is fixed · When the rotation of the fabric take knitted cable 3 in spatially fixed machine frame 1 Aim bevel gear 4 meshes with the bevel gear 2, a · Bit Rotationsbewegwg is το · bevel gear M- over the chain wheel 5 by means of chain 4 on dl · Transfer plate 7, which sits firmly on the shaft 8 and is driven with a constant turning tool, this constant speed being greater than that speed which is required for the highest possible delivery speed ^ and 10 limited that. are axially and radially movable on the WtHe β ante

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The sprocket 11 is attached to the friction disk 9 and stands over the chain 12, which is in the sprocket 13 engages) with the take-off roller 14 · The sprocket 15 is attached to the friction disc 10 and stands over the chain 16, which engages in the sprocket 17, in connection with the distribution roller 18, which drives the winding roller 19 by means of a circumferential drive. With the Compressive force F on the friction disk "9 is accordingly the delivery quantity the tension of the goods with the help of the adjusting nut 20 and the disk spring assemblies 21 are set. Discharge ratios changing during the knitting process are automatically adjusted to a constant fabric tension. The pressure force F 'is controlled with the increasing diameter of the angle 29 as follows:

On the frame 3, in which the axis 22 of the distribution roller 18 is supported, the pivotable cam, 23 is attached, which is applied to the lever 24.

As the diameter of the coil 29 increases, dl increases Wickelaohse 25 in the guide 26 near the top and steers while the curve 23 from «This Auslenkbewegunguhg is transferred via the lever 24 to the guide plate 27, which presses the disc spring assemblies 28 onto the friction disc ..

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Claims (6)

Claims 1) Goods take-off and take-up device for round - ^ striokaasohinen with a drive for the goods take-off rollers and a drive for the Reibwal ssen arranged on the circumference of the roll, which one Slipping clutch is arranged upstream, characterized) that the goods take-off rollers (14-) a slip clutch (7; 9) is vorgeortnet and both clutches (7; 9) and (7; 10) have a common drive (7) 2) Vorriohtung according to Anepruoh 1 _f daduroh gekennielohnet that the torque to be transmitted of the slip clutch (7J9) for the goods take-off rollers (14) adjustable and the torque of the slip clutch (7; 10} for the winding roller (19) depending on the diameter of the roll ( 29) is controllable 3) Device according to claim 1 and 2, characterized daduroh, that the common drive consists of a driven faceplate (7) which is stationary seated on a drive shaft (3), the flat disc (7) on one side with a friction disk (9) that is drive-connected to the take-off roller (14) adjustable contact pressure (F) is assigned and on the other side one with the winding roller (19) Drive-connected friction disc (10) with controllable contact pressure (F ^ is assigned 4) Vorrlchtung according to claim 1 to 3, characterized in that. that for pressing the friction disks (9; 10) on the face plate (7) preferably plate spring assemblies (21; 28) are provided. 5) device naoh claim 1 to 4, characterized in that that in order to change the torque of the friction disk (10) the bias of the plate spring assemblies (28) is controllably provided will. . 509808/02 8 5 6) Device according to claim 1 to 5, daduroh gt characterizes, that eur bias one control variable in height with increasing angular diameter Winkeiaohse (25) is provided, the transmission elements corresponding to a curve (23) bit (24; 27J28) is assigned 509808/0285